Abstract
PURPOSE: Decreases in central and mixed venous O2 (ScvO2 and SvO2, respectively) saturations are accepted markers of deficient oxygen delivery. During weaning from mechanical ventilation others have noted decreases in SvO2 in patients who failed weaning (Jubran et al. AJRCCM 1998; 158:1763). Our aim was to determine the relationship of SvO2 to O2 delivery (DO2) and to consumption (VO2) during the immediate post extubation period in cardiac post-operative patients.
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